Where's servlet container in deployment diagram?

[pippo pippi]

Hello,

I've a doubt about deployment diagram.

When I distinguish between web server and application server, where is the servlets/jsps container?
I want to give to Web Server and Application Server different hardware, but depending of this assumption the architecture and the connections may be different, right?

Thank you very much,

Stefano

[Unni Pillai]

Servlet container is part of application server. For example Jboss application sever uses tomcat servet container.

[pippo pippi]

Thanks Unni,

I know that but I was not sure where it's "logically" placed in the deployment diagram.
I saw deployment diagrams where the servlet container was explicitly placed in the web component... but this is another story...

[Vijay keshava]

Hi,

If I were to have web components in a separate war file and deploy it on the webserver, and ejbs/business classes in a different ear file and deploy it on the appserver, I would show the servlet container on the webserver and ejb container in the appserver, else I would show both on the appserver.

If webserver is used only for reverse proxy, loadbalancing and caching static content, then I would not show the servlet container in the webserver.

Regards,
Vijay

[pippo pippi]

Perfect.

Thank you very much

[Nikhil Kodilkar]

Your servlet container & EJB container both will reside inside the application server (Weblogic, Websphere, Glassfish, etc.).
That's 99% of the scenarios I've seen.

For simple applications there is a servlet container running independently (tomcat for example).

[Bartosz Borowiec]

Usually web and ejb parts of application are deployed on the same machine. Teoretically you can deploy web part on separated web server ( tomcat ) and application server(jboss) that resides on different machines. But the question is why? May be two or more web applications can share the same the same ejb tier. I think that in assignment you should use simpler aproach.